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Mechanical Properties Of Fluids

Question

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Why Carnot engine cannot be realised in practice?

Solution

Carnot engine cannot be realised in practice because of the following reasons:
(i) source and sink of infinite thermal capacity cannot be realised in actual practice,
(ii) we cannot have perfect insulators and perfect conductors in actual practice.
iii) compression and expansion cannot be carried out very slowly for the cycle to be reversible.

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